One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,3)(4,7,8,6)(9,10,14,12)(11,16,15,13)(18,19)(20,24)(27,31)(29,32)(2,3)(4,8)(9,11)(10,13)(12,16)(14,15)(18,19)(22,23)(25,26,28,30)(27,29,31,32)(4,8)(6,7)(11,15)(13,16)(17,18,21,19)(20,22,24,23)(1,3,5,2)(4,6,8,7)(9,12,14,10)(11,13,15,16)(17,19,21,18)(20,23,24,22)(25,27)(26,29)(28,31)(30,32)(1,4,5,8)(2,6,3,7)(9,13)(10,15)(11,12)(14,16)(17,20)(18,22)(19,23)(21,24)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.